It is important when you make New Year's Resolutions to get fit, that you don't create an unattainable goal. Start with the basics.

For upper body, try push-ups (kneeling or regular), shoulder press, or one arm back row.

For the lower body, try lunges, plies', or side lunges.

For abs, try crunches, pilaties bicycle, or lying hip raises.

This is a basic way to begin and can always be expanded with additional ideas. You can get them from a trainer, from magazines ( oxygen, Shape or Fit for example), on the internet, or ask friends that do workout regularly what works for them.